Adair (7,624)
Adams (4,096)
Allamakee (14,610)
Appanoose (13,019)
Audubon (6,072)
Benton (26,546)
Black Hawk (127,446)
Boone (26,391)
Bremer (23,734)
Buchanan (20,927)
Buena Vista (19,776)
Butler (14,660)
Calhoun (9,987)
Carroll (20,923)
Cass (13,884)
Cedar (17,990)
Cerro Gordo (44,016)
Cherokee (11,686)
Chickasaw (12,215)
Clarke (8,995)
Clay (16,689)
Clayton (17,685)
Clinton (49,051)
Crawford (16,579)
Dallas (57,288)
Davis (8,572)
Decatur (8,409)
Delaware (17,459)
Des Moines (40,701)
Dickinson (16,696)
Dubuque (92,359)
Emmet (10,414)
Fayette (20,433)
Floyd (16,306)
Franklin (10,568)
Fremont (7,571)
Greene (9,505)
Grundy (12,149)
Guthrie (11,053)

Hamilton (15,596)
Hancock (11,379)
Hardin (17,551)
Harrison (15,409)
Henry (20,123)
Howard (9,545)
Humboldt (9,615)
Ida (6,940)
Iowa (15,912)
Jackson (20,035)
Jasper (36,748)
Jefferson (15,618)
Johnson (125,692)
Jones (20,402)
Keokuk (10,770)
Kossuth (15,605)
Lee (35,619)
Linn (205,836)
Louisa (11,795)
Lucas (9,421)
Lyon (11,266)
Madison (15,416)
Mahaska (22,280)
Marion (32,775)
Marshall (39,316)
Mills (15,180)
Mitchell (10,738)
Monona (9,131)
Monroe (7,586)
Montgomery (11,002)
Muscatine (42,423)
O'Brien (14,062)
Osceola (6,468)
Page (15,874)
Palo Alto (9,442)
Plymouth (24,373)
Pocahontas (7,686)
Polk (418,339)
Pottawattamie (89,409)
Poweshiek (18,672)

Ringgold (5,152)
Sac (10,385)
Scott (162,687)
Shelby (12,313)
Sioux (32,351)
Story (84,752)
Tama (17,855)
Taylor (6,397)
Union (12,146)
Van Buren (7,690)
Wapello (35,551)
Warren (44,503)
Washington (21,346)
Wayne (6,292)
Webster (38,587)
Winnebago (10,961)
Winneshiek (20,909)
Woodbury (102,287)
Worth (7,685)
Wright (13,064)